One preferred URL per page
The same content is often reachable at several URLs — with and without tracking parameters, with a trailing slash or not. Search engines can treat those as separate pages and split the ranking between them. A canonical tag names the one true version, and this tool builds it while stripping the noise that creates the duplicates in the first place.
Cleaned automatically
Paste a URL with campaign parameters and a fragment, and the generator removes them, shows the clean canonical, and wraps it in the link tag ready for your head. Everything runs on your device, so the URLs you check are never sent anywhere.